It's frustrating to calibrate your precautions when there's only one kind of really definitive feedback you can get, you can only get it once, and when you do it's too late.

"Covid Precaution Level", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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It's frustrating to calibrate your precautions when there's only one kind of really definitive feedback you can get, you can only get it once, and when you do it's too late.